Quote:
Originally Posted by DAVID GAGNARD
I asked which distributor gear to use and they never would give me a straigt answer.....I ended up with a bronze gear and at the end of each race season, the gear is worn out, you could shave with it, the teeth are that sharp...... I'm gonna get one of those new fangled composite gears this time. Now that my motor is "down' and I'm gonna build a new one, I'm going to change cams. My present cam has 588 lift and 288 duration. I like it a lot but want a little more, Would like to get into the 600 to 615 lift area, but would like to keep the duration about the same...I'm running a solid roller comp cam with comp solid roller lifters, I find it is "noisy" so I was thinking of a cam upgrade in size that is,but wondering if I could use hydraulic roller lifters on a solid roller camshaft?????????????
David
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The bronze gear is soft and sacrificial so the cam gear lives, it's really only meant to be used on distributors only since driving an
oil pump loads the gear and wears it out.
Why not run a steel gear, after all, gearboxes and diffs run gears made of the same material.
Ultimately if you don't pull the engine down, it will stop from no spark and/or no
oil pressure.
We have exactly as you speak with our 355, cam eout for an
oil leak at 11000km.
You can't use hydraulic lifters on a solid cam and vice versa.
Solid and hydraulic cams are ground differently, base circle concentricity, opening and closing flanks and ramps.
This applies to ALL cams - roller, flat tappet, mushroom tappet, OHC bucket and shim, OHC rockers etc.